Stud setting and loosening tool



Aug. 21, 1928. 1,681,203

N'. H. WESTERB ERG- STUD SETTING AND LOOSENING TOOL .Fjled Dec. 1, 1924 Invenl'or:

, 55 oneanother by means of the handle on rachea A gzi, 192s.

, any

UNITED ST PATENT omen NILS HAIJ TAB wns'rmnnndor nJoR'rHAonnvAnrAn,swrumn.

gs'run SETTING AND LoosEnme'rooL, f

a utauonf filed December 1, 1924, sci-mine.

The present invention relates toa tool by "means of which it ispossible aneasyand simple mannerto setror tasten as well as to loosen threadedstuds without damaging or deforming thethreads on the studsin' manner. The improved .tool consist-s principally of two members provided with screw-threaded holes for receiving the stud and also provided with handles, said mem- V bers of the tool are preferably connected to one another by means of threads which may be ofa smaller pitch, for instance, than the threads on the stud and in the holes for the same in the members.

The accompanying" drawing illustrates, partly in section, a tool according to the invention. 7

Referring to the drawing, the tool consists of two members or portions 1 and 2.

,In the embodiment illustrated the member 2 is provided with'a portion of reduced cliameter having external threads 3 by means of which said member 2 is screwed into a correspondingly threaded recess in the mem her 1 and thus joined tosaid member. Each of said members 1 and 2 is provided with a a hole or bore4 and 5, respectively, which is threaded internally to receive the stud. At

least in one mutual position of the members 1 and 2 said bores 4 and 5 are conaxial to each other, andin'such position thethreads in one member form a continuation of the threads in the other member, so that a stud 6 may be screwed into the threaded holes 4 and 5. The said mutual positionofthe members 1 and 2 isindicated by the marks 7 and 8 on said members which marks come opposite each other in such position, whilst the mark 9 onthe member 2 comes flush with theupper edge of, the member 1.

When the stud6 has been screwed into the members 1 and 2-While these members occupy the above-mentioned mutualposition, said two members are turned relatively to 753,059, and in Sweden December 10, 1923.

the member 1. andthe handle 11 which; is V "slidable in an aper'ture in the upper end of the member 2. Owing to'such turning of the members 1 and '2' relatively to each other the stud 6 :willobviOusly-be jammed, particularly when, as shown, the pitch of -the threads?) joining the twomembersis smaller WVhen the stud has been jammed in this manner it maybe screwed by means of the toolinto or out of the 'memberror part to which it is tobe fastened, or from which it is to be loosened, the tool' being turned by *means of the handle 11, whilst the handle I 10 may suitably be removed, particularly if it proves to be an obstacle to the turning of the tool. i i

It will be understood that the invention is not limited to the embodiment'above described and illustrated in the drawing. Though it is preferred to connect or join the membersl and 2 by means of a thread 3 which is conaxial to the threads in the holes for the stud in the members, a'ndihas the same direction but a smallerpitch than said thread in said holes,'it is obviously possible,

for instance, instead to give the firstmentioned thread an opposite direction, or. to make the same of a larger pitch thanv the thread on the stud, or to make the same eccentric to the holes forthe stud. It would also bepossible to do without the thread 3,]

than the pitch of the threads on the stud 6. i

and other similar changes and modifications" may be made within the scope of-the in-- vention.

Iclaima V 1. A tool for fastening and loosening studs, comprising two members provided with screw-threaded holes for'receiving a stud, and each provided with a handle the threads of said holes being of the'same pitch, said members being joined by 'means of screw-threads in such manner that by being turned in relation to one another they will be jammed ontoa stud screwed into the holes in the members.

2. A tool for fastening and loosening studs, comprising .two members provided with screw-threaded holes for receiving a stud, and each provided with a handle the threads. of said holes being of the same.

pitch, said membersbeing joined by means of screw-threads in such manner that by being turned in relation to one another they will be jammed onto a stud screwed into the holes in the members, the screw-thread joinj ings whereby said stud will be rotated with said members.

4. A tool for fastening and loosening 1,es1,2os

threaded studs eomprising: two membern eaeh provided with an operatinp handle and an opening having a diameter and threads;

adapted to receive a stud. said members being connected by one to the other by additional coat-ting: threaded portions, the piteh of which latter threads is less than the pitch of the threads of said openings whereby movement of one of said members relatively to the other will cause the threads of said members to jam with the threads of a stud screwed into said opening, and thereby cause said stud to turn with said members upon rotation of the latter.

NILS HALVAR \VES'IERBERG. 

